There are plenty of tough guys about. And a fair amount of them know their way around mixed martial arts. But how many of them have the nuts to walk into a MMA gym and challenge a Jiu Jitsu expert to a scrap? Not many. And with good reason!

But it happens. And when it does, it needs to be caught on camera. So we can watch what happens. In this clip, a dude strolls into a fighting gym and calls out a pro fighter…